Do algae have a DNA?
Do algae have a DNA?
The nucleus contains most of the genetic material, or deoxyribonucleic acid (DNA), of the cell. In most algae, the molecules of DNA exist as linear strands that are condensed into obvious chromosomes only at the time of nuclear division (mitosis).
What type of DNA does algae have?
Yes, algae have DNA. They are eukaryotic, photosynthetic life forms, which possess a true nucleus comprising deoxyribonucleic acid (DNA) of the cell. Algae are eukaryotic, photosynthetic life forms of the kingdom Protista.
What is the structure of an algae?
The structures are single cells (Micrasterias), filamentous algae, colonies (Volvox), and leaf-like shape (Thalli). Terrestrial plants arose from a green algal ancestor. Both have the same photosynthetic pigments (chlorophyll a and b). Some green algae have a cell wall made of cellulose, similar to terrestrial plants.
Does algae have nucleic acid?
The algae biomass contains carbohydrate, protein, lipid, and nucleic acid.
What type of DNA is in an algal chloroplast?
homogeneous circular DNA molecules
The chloroplast genome consists of homogeneous circular DNA molecules. To date, the entire nucleotide sequences (120-190 kbp) of chloroplast genomes have been determined from eight plant species.
Does green algae have chromosomal DNA?
For this purpose, we chose the genome of the unicellular green alga Chlorella vulgaris, which is only 38.8 Mb and consists of 16 chromosomes ranging from 980 kb to 4.0 Mb in size (13).
How many chromosomes do algae have?
Number of chromosomes/cell
| Value | 17 Chromosomes/cell Range: Table – link Chromosomes/cell |
|---|---|
| Organism | Green algae Chlamydomonas reinhardtii |
| Reference | Merchant et al., The Chlamydomonas Genome Reveals the Evolution of Key Animal and Plant Functions, Science. 2007 Oct 12 318(5848):245-50. p. 247 table 1PubMed ID17932292 |
Does green algae contain chromosomal DNA?
What is the shape of algae?
Algae have a great range of shapes and sizes, from spherical cells with 0.5 μm diameter to 60 m long multicellular thalli. There are about 72,500 validly described species of algae; they live in the top 300 m of marine and inland waters, and on land, as free-living organisms or in symbiosis.
Do green algae have nucleotides?
The complete nucleotide sequence of the chloroplast genome (150,613 bp) from the unicellular green alga Chlorella vulgaris C-27 has been determined. The genome contains no large inverted repeat and has one copy of rRNA gene cluster consisting of 16S, 23S, and 5S rRNA genes.
Where is the DNA in chloroplasts?
In primitive red algae, the chloroplast DNA nucleoids are clustered in the center of a chloroplast, while in green plants and green algae, the nucleoids are dispersed throughout the stroma.
How is DNA in a chloroplast vs DNA in nucleus?
How is DNA in chloroplast different to DNA in the nucleus? Nuclear DNA is long, linear and associated with histone proteins, whereas chloroplast DNA is smaller, circular and not associated with histones.
